Wrench.



1.8. FURGERSON, G. W. DAVIS & W. W. FURGERSON.

WRENCH.

APPLICATION FILED JUNE 6. I916.

11 21 6,32 4., Patented Feb. 13, 1917.

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$2M a awe Wm Pcrsns CO..PHO10-L nm..wAsmm;mN o c '1. S.- FURGERS ON, G. W. DAVIS 6; W. W. FURGERSON WRENCH.

APPLICATION FILED JUNEG, 1915.

m1 mw, Patented Feb. 13, 1917.

2 SHEETS-SHEET 2.

wuwwtom JSWZU' 11$ 72 JESSE S. FURGERSON, GEORGE W. DAVIS, AND WILLIAM W. FURGERSON, 0F DEPORT,

TEXAS.

WRENCH.

Application filed June 6, 1916.

To all whom it may concern.

Be it known that we, J rssr S. FUnenRsoN, GEORGE W. DAVIS, and WILLIAM W. FURGER- SON, citizens of the United States, residing at Deport, in the county of Lamar and State or Texas, have invented certain new and useful Improvements in Wrenches, of which the following is a specification.

This invention relates to Wrenches and more particularly to wrenches of the ratchet type and it is one object of the invention to so construct the jaws of the wrench that the .movable jaw will automatically coact with the relatively fixed jaw to firmly grip the nut or pipe to be turned, as pressure is exerted against the handle of the wrench.

Another aim of the invention is to so mount the movable jaw of the wrench and .to so construct the ratchet head and the movable jaw that these parts will coact in such manner that the movable jaw will be moved in the direction of the relatively fixed jaw when pressure is exerted against the wrench handle.

Another aim of the invention is to so construct the relatively fixed and movable jaws that the movable jaw will be held against slipping after application of the wrench to the nut or pipe.

In the accompanying drawings:

Figure 1 is a perspective view of the wrench embodying the present invention.

Fig. 2 is a horizontal sectional view therethrough.

Fig. 3 is a vertical longitudinal sectional view through the wrench.

Fig. 4 is a group perspective view of the relatively fixed and movable jaws and the ratchet head of the wrench.

Fig. 5 is a perspective view of a portion of the shank of the movable jaw.

Fig. 6 'is a perspective view of the pawl which cooperates with the ratchet head.

In the drawings the handle or stock of the wrench is indicated by the numeral 1 and the same is provided atone end with spaced cheek pieces 2. For a purpose to be presently explained the said stock or handle 1 is provided in one side immediately in rear of the cheek pieces 2 with a recess 3. The relatively fixed jaw of the wrench comprises a body 4 having spaced cheek portions 5 which fit between the cheek portions 2 of the stock and are pivotally con- Specification of Letters Patent.

Patented Feb. 13, 1am.

Serial No. 101,979.

nected by means of a pivot pin 6 which is fitted through openings 7 in the said cheek pieces 5 of the relativelv fixed jaw and secured at its ends in openings in the cheek pieces 2. The body t is formed with a jaw portion 8 and with a groove 9 which extends longitudinally of that edge of the body beyond which the said jaw portion projects, the groove being increased in width at its bottom as indicated at 10 so as to form longitudinal shoulders 11 upon its opposite side walls, as clearly shown in Figs. 3 and 4 of the drawings. The sliding or movable jaw of the wrench is indicated by the numeral. 12 and is provided with a shank 13 which is of a thickness less than that of the jaw 12 and is formed upon that edge opposite the edge which is integral with the inner end of the said jaw, with a series of rack teeth indicated by the numeral 14:, the said edge of the shank being further formed at its ends with lugs 15 which project beyond the planes of the side faces of the said shank as do also the ends of the teeth 14:. The projecting edges of the lugs 15 and the projecting ends of the teeth 14 fit slidably within the widened portion 10 of the groove 9, the body of the shank 13 fitting in the narrower portion of the said groove and the jaw 12 being in this manner slidably assembled with the relatively fixed aw 4. Inasmuch as the v shank 13 is of a thickness less than the thickness of the jaw 12, the said jaw is formed at its base or inner end with longitudinal shoulders 16 and these shoulders are provided each with a series of relatively shallow teeth 17. In a like manner the outer edges of the walls of the groove 9, or, in other words, the outwardly presented edge of the body 4 of the relatively fixed jaw at the opposite sides of the groove, is formed with a' series of teeth 18 designed to coact with the teeth 17 whereby to prevent slipping of the sliding jaw without, however, interfering with adjustment of this jaw with relation to the relatively fixed jaw. The relatively fixed jaw 4 is formed with a slot 19 which opens through the bottom wall of the groove 9 and this slot permits of cooperation of the ratchet head of the wrench with the rack teeth 14 upon the shank of the said movable jaw. The said ratchet head is indicated by the numeral 20 and is provided axially with an opening 21 through which the pin (3 passes, the said head being in this manner rotatably supported between the cheek pieces 5 of the relatively fixed jaw of the wrench. The ratchet head 20 is circular in form and is provided with a series of teeth 22 the series extending substantially half way around the periphery of the said head. The head is also provided with a series of teeth 23 which latter series extends throughout the remaining length of the pe riphery. The teeth 22 are designed for the cooperation therewith of the pawl of the wrench, which pawl will be presently described, and the teeth 23 mesh with the teeth 14 upon the shank 13 of the movable jaw 12. In order to prevent withdrawal of the movable jaw or more specifically, the shank 13 thereof from the groove 9, the lug 15 at that end of. the shank remote from the end at which the jaw is located, is provided with a recess 24 designated for the engagement therein of the tooth 23 at one end of the series of such teeth, this recess being, however, of a depth less than the length of the tooth so that the tooth will bind within the recess and prevent further movement of the shank in a direction to withdraw the same from engagement in the said groove 9.

The pawl above referred to is indicated by the numeral 25 and is pivotally mounted as at 26 within the recess 3, the pawl being provided at its forward end with a tooth 27 for cooperation with the teeth 22 of the ratchet head. A spring 28 is arranged witl in the recess 3 and bears at one end out wardly against the rear end of the pawl 25' and at its inner end seats within a socket 29 formed in the inner wall of the recess 8. The pawl at its said rear end and upon its outer side is provided with a thumb knob 30 against which pressure may be exerted for the purpose of moving the tooth 27 of the pawl out of engagement with the teeth 22.

From the foregoing description of the in vention it will be understood that when the wrench is applied to the nut or pipe to be turned and thehandle is swung in a direction to rotate the nut or pipe, the ratchet head 20 will be initially rotated in such manner as to slide the jaw 12 in the direction of the jaw 8 so that the jaws will coact to firmly grip the said nut or-pipe.

IVhile the ratchet head coaets with the shank of the movable jaw in the manner above stated, it does so without in any way interfering w1th the backward and forward motion of the handle of the wrench as in wrenches of this type.

Having thus described the invention, what is claimed as new is:

1. In a wrench of the class described, a stock, a relatively fixed jaw mounted upon the stock, a movable jaw slidably carried by the relatively fixed jaw, a rack upon the movable jaw, a ratchet head rotatably mounted and having a series of teeth coacting with the said rack, the said ratchet head being provided with a second series of teeth, and a pawl carried by the stock and coacting with the last mentioned series of teeth upon the ratchet head.

2. In a wrench of the class described, a stock, a relatively fixed jaw mounted upon the stock, a movable jaw slidably carried by the relatively fixed jaw, a rack upon the movable jaw, a ratchet head rotatably mounted and having a series of teeth coacting with the said rack, the said ratchet head being provided with a second series of teeth, a pawl carried by the stock and coaeting with the last mentioned series of teeth upon the ratchet head, and means for limiting the sliding movement of the movable jaw away from the relatively fixed jaw.

3. In a wrench of the class described, a stock, a relatively fixed jaw mounted upon the stock, a movable jaw slidably carried by the relatively fixed jaw, a rack upon the movable jaw, a ratchet head rotatably mounted and having a series of teeth coacting with the said rack, the said ratchet head being provided with a second series of teeth, and a pawl carried by the stock and coacting with the last mentioned series of teeth upon the ratchet head, the relatively fixed and movable jaws having slidably coacting surface portions each provided with a series of relatively shallow teeth.

4. In a wrench of the class described,

jaws sidably connected for relative adjnstment, a rotatable member carried by one of the jaws and coacting with the other jaw to move the same toward and from the firstmentioned jaw when the said member is rotated in one direction or the other, a stock pivotally connected with one of the said jaws, and means upon the stock for cooperation with the said rotatable member.

In testimony whereof we affix our signatures.

JESSE s. FURGERSON. 1,. 8-] GEORGE W. DAVIS. 1.8. WILLIAM w. ruaerasor. [n 8.]

' Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

